Opteka 420-800mm f/8.3 HD Telephoto Zoom Lens for Nikon D4s, D4, D3x, Df, D810, D800, D750, D610, D600, D810, D800, D7200, D7100, D7000, D5500, D5300, D5200, D5100, D3300 and D3200 Digital SLR Cameras Newly improved 2014, manual focus, digitally-optimized telephoto zoom lens Super zoom 420-800mm focal length HD, super multicoated glass optics for the sharper images 4 Elements in 2 groups Rotating tripod mount